85747213 has 2 divisors, whose sum is σ = 85747214. Its totient is φ = 85747212.

The previous prime is 85747091. The next prime is 85747219. The reversal of 85747213 is 31274758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65334889 + 20412324 = 8083^2 + 4518^2 .

It is a cyclic number.

It is not a de Polignac number, because 85747213 - 2¹³ = 85739021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85747219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42873606 + 42873607.

It is an arithmetic number, because the mean of its divisors is an integer number (42873607).

Almost surely, 2^85747213 is an apocalyptic number.

It is an amenable number.

85747213 is a deficient number, since it is larger than the sum of its proper divisors (1).

85747213 is an equidigital number, since it uses as much as digits as its factorization.

85747213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 85747213 is about 9259.9791036481. The cubic root of 85747213 is about 440.9675899965.

The spelling of 85747213 in words is "eighty-five million, seven hundred forty-seven thousand, two hundred thirteen".